Function to ensure colors match across plots

Usage

make_pal(
  levels,
  palette,
  refvals = NULL,
  refcols = NULL,
  includeRef = FALSE,
  returnUnref = FALSE,
  direction = 1
)

levels: character vector of levels to use (should be all possible for the variable)
palette: character vector of palette name from paletteer
refvals: character vector of levels we want to set manually (typically as references)
refcols: character vector (names or hex) of colors to set manually in order matching refvals
includeRef: logical, defailt FALSE. Should the colors be chosen including (TRUE) or not including (FALSE, the default) the levels in refvals. Typically TRUE if we sometimes want to accentuate a level, and sometimes not.
returnUnref: logical, default FALSE. Should we return the base palette with the refvals matched to palette in addition to the version where they match refcols (TRUE). Only works if includeRef = TRUE. If TRUE, returns a list with the base palette and the palette matching refcols
direction: 1 (default) or -1 (reverse the palette), as in paletteer::paletteer_c() and paletteer::paletteer_d()

typically a named character vector of colors, unless includeRef = TRUE and returnUnref = TRUE. In that case, a list of two named color vectors.